I rented an upstair room to a backpacker a month ago in Saigon Vietnam. On his last day, he picked up some chick off the street, brought her home and locked the

I rented an upstair room to a backpacker a month ago in Saigon Vietnam. On his last day, he picked up some chick off the street, brought her home and locked the front door from the inside. My staff ( I have an online bookstore there) couldn't get in for half a day. I sent airbnb a message complaining and heard nothing back from them. I don't think it is that hard to hold a credit card number of the guest just in case stuff like this happens. Why they are not doing it is beyond me.